Littelfuse introduces SMC Automotive grade 3kA SIDACtor for line protection of high surge current AC power supplies

     Littelfuse Corporation, an industrial technology manufacturing company dedicated to powering A sustainable, connected and safer world, announced the launch of the new PXXX0SSN-A automotive grade 3kA SIDACtor® protected thyristor family in DO-214AB (SMC) packaging. This innovative product is designed to provide robust and reliable high surge current protection for equipment operating in harsh environments, making it easier for designers to meet regulatory requirements.

     The main advantage of the PXXX0SSN-A series is its high power density design, capable of withstanding inrush currents up to 3kA (8/20µs) and voltages up to 6kV with very low clamping voltages. This compact SIDACtor device is packaged in the DO-214AB (SMC) package, allowing automakers to achieve high power density design and product miniaturization in automotive electronics.

     Developed specifically for pure electric vehicle (BEV) and plug-in hybrid electric vehicle (PHEV) applications, the PXXX0SSN-A series provides superior transient surge protection for on-board chargers when used in combination with MOV. By integrating this compact SIDACtor into the system, automakers can provide charging systems with more reliable, robust, and cost-effective AC power protection.

     The new 3kA SIDACtor is the first thyristor product in the DO 214AB package and provides surge protection at 6kV/3kA (8/20µs). Previously, achieving such a high surge rating required a larger TO-262 package. This compact SIDACtor easily protects against severe transients and is ideal for exposed applications. "The PXXX0SSN-A SIDACtor series is suitable for A variety of market segments, including automotive, industrial and ICT electronics, and is particularly suitable for high surge current protection in automotive electronics," Charlie Cai, SBU Director of Marketing for Littelfuse protected semiconductor products. "This automotion-grade SIDACtor family enables product miniaturization and ensures compliance with regulatory requirements and product durability."

     Traditional solutions often present challenges due to their large designs, and the performance of these solutions can degrade over time, reducing their protective efficacy. The PXXX0SSN-A is more compact and offers A surge rating ideal for highly exposed applications. Compared with the Pxxx0FNL 3kA SIDACtor series in the TO-262M package, it has a significant advantage and requires about 50% less PC board space. This new product represents a leap forward and is the first DO-214AB size product on the market capable of handling 6kV/3kA (8/20) surges. Prior TO this improvement, achieving this level of protection required a larger TO-262 package.